Mold for building-blocks.



No; 826,467. PATENTBD JULY 1906. J. M. BOLTON 1 MOLD FOR BUILDING BLOCKS.

. APPLICATION FILED 00117. 1905.

f Uh T If i IZ" r J #1 WM it I r Q a 7'" gnuewtoz 3 witnesses v I,

1 I W f MOW i To all uho'ln lt mag concern." a i Be it knownfthatl, JAMES M. BOLTON, a citizen of the UnitedStates', residing at Washington, ,in the District of Columbia, have in vented oertain new and useful-Improvements inMolds for BuildingiBlocks, of which the following is a; specification, reference being had to the drawings,-in which+ Figure 1 isaplan showing the mold assem- ,bled. Fig]. 2 is an end elevation of the same; i Fig. 3, an insideview of one of the side mem- I bers Fig. 4,,across section on the line IV IV, showingthe mold closed; and Fig. 5, a section along the same line, showing the mold partly .openedL I i p My invention relates to molds for building- 1 warm of an ordinary brick, having apertures 1 which may be alined in the laying tofurnish flues toprevent the accumulation of moisture,

, the] blocks being preferably composed of a mixture of c ement', and coarsely-granulated slagqorwgravel and having a thin facing of substantiallypure cementor of cement combinedonly with coloring material to give the appearanceof a tile,}my object beingto provide a cheap and easily-construe)? separable F mold in which this facingmay rapidly, applied to one side an, if desired, one end of the block before it is removed from vuthe moldand while the latter provides guidingedges for the trowel or other tool.

a In the drawings, 1 is a base, whose width is lsubstantially the length of a block, long enough to hold a number of blocks and upon which the blocks may be set away to dry when the moldingisl completed. This base hjas,preferably,a facing L of some non-corrosiveimetal, such ,assheet-brass:

Upon thebase may be assembled the inclosidthlofthe blockplus the thickness of the ass and the latter preferably only as wide as the width of theblock to be molded,as shown in Figs. 2,4, and When assembled, these sides are supported by tenons on the ends 3, assingjinto grooves or mortises 3, as'shown nFigsql and3. Theseparts are then secured by hookedclamps 7, seating in the notches 7, and aperturedpartitions 4, preferably offmetal of suitable, thickness, are

it dropped into the grooves 9 of the sides 22;. Thegpartitions are preferably provided at onelower corner with hooks or tongues l,

"Specificationof Letters Patent. Application filed October 1' 1305. Serial Ne. 233,119.

blocks, preferably such as aremade in the eadily and" ng sidesZ 2-, theformer being as wide as the i 5 5 which engagerecesses 6 at the bottoms of the 1 s grooves9;of the wider side member. They,

,UNiT D STATES PATENT onrron. JAMES: M. sonron, or wAsHINe o DISTRICT or COLUMBIA.

'j "MOLD FOR BUILDING-BLOCKSP Patented July .17, 1906. a

are also slightly recessed, as at 10, to prevent bin ding when the member 2 assumes the position shown in Fig. 5. i

After the above-described parts are assembled the mold may be filled to about the level of the lower edge of the registering apertures 5,, and the f core 5, which is preferably U- shown in Fi 1, after which the filling, tamping, and stri ring of the mold is completed.

It will be noted that the arts are so proportioned that the upper ec ges of the sides,

, ends, and partitions of the mold lie in substan tially the same plane, so that a thin facing of cement orother suitablev material may be apshaped, is passed through the apertures, as

plied to the upper edge of eachblock and troweled" or otherwise lfinished using the mold members as guides. s s w t If it is desired tofinish an end of each block with afacing of finer material, as may be nec essaryin molding corner-blocks, core, '5 and clamps 7 are removed and the side member 2 swung outward about its lower edge as a fulcrum to the position shown in Fig. 5', thus releasing themember 2" and bringingthe free ends of the partitions 4 just flushtwith the edge ofthe base 1 and the endsof the molded blocks. This exposes the ends of the blocks so that the finer facing may be a plied and smoothed, while the partitions still remain in place as guides for the finishing-tool." The length of the hooks 4 may be so proportioned that member 2 will disengage itself therefrom just as the'opposite'ends of the partitions are brought into register with the free edge of the base and the exposed ends of the blocks. After the ends of the blocks have been faced, as above described, the partitions may be completely removed and the base, with its contained blocks, set aside till the latter have hardened sufficiently tobe safely'handled.

Many variations in my apparatus may be made by those skilled in the art without de-,

parting from my invention, since What I claim is- 1. A'blockmold having partitions and means for automatically withdrawing and then releasing the partitions when the mold is opened. fi-" i i 2. A separable block-mold having inclosing sides, partitions and separable connections between said sides and partitions arranged to partially withdraw the partitions when the mold is o ened.

3 A separable b ock-mold having a base,

inelosing sides and ends", and partitions, said ends being constructed'to support the sides in proper relation to the base, and connec-v tions between the partitions and one side, arranged to automatically withdraw the partitions a predetermined distance, 'whenthe mold is opened.

4. A separable block-mold having sides, partitions having apertures, a core adapted to be inserted in said apertures, and connections between one of said sides and the' partitions for partially withdrawing the partitions after the core is removed.

5. A separable block-mold comprising a base, inclosing sides, apertured partitions and a core adapted tobe inserted in saidapertures, the upper edges of the sides and partitions lying in substantially the same plane,

clamps for holding said sides and partitions in closed position, and means for automatically withdrawing the partitions a predetermined distance when the mold is opened.

In testimony whereof I affix my signature in presence of two witnesses JAMES M. BOLTON.

. Witnesses:

BYRON P; T RNER, W: D. GRoEsBEoK. 

